On-Yasai Shabu-Shabu 20% Off in September 2026: Dates, Coupon Rules and How to Use It

Key information

What is the On-Yasai September 2026 campaign?

On-Yasai is a Japanese restaurant chain specializing in shabu-shabu, a hot-pot meal in which thinly sliced meat, vegetables and other ingredients are cooked at the table in hot broth. The chain offers several all-you-can-eat courses, and the September 2026 campaign reduces the final bill for customers who meet the coupon conditions.

The promotion is tied to Respect for the Aged Day, a Japanese national holiday in September, but the published coupon conditions do not limit the discount to senior customers. The main requirements are the eligible date, an eligible all-you-can-eat course, a party of at least two people, and a pre-discount food and drink total of at least ¥5,500.

20% off on non-holiday weekdays; 10% off on weekends and holidays

The larger discount is available on non-holiday weekdays. In 2026, the 20% coupon applies on September 14-18, September 24-25, and September 28-30. These exact dates avoid a potential language trap: September 21, 22 and 23 fall on Monday through Wednesday, but they are holidays in Japan and therefore do not use the 20% coupon.

A separate 10% coupon applies on Saturdays, Sundays and Japanese holidays within September 19-27, 2026. The qualifying dates are September 19-23 and September 26-27. September 21 is Respect for the Aged Day, September 22 is an official holiday under Japan’s holiday law, and September 23 is the Autumnal Equinox Day. Travelers should check the date before saving the QR coupon.

For example, a qualifying ¥5,500 bill would receive a ¥1,100 discount on a 20%-off weekday, or a ¥550 discount under the 10%-off coupon. A qualifying ¥10,000 bill would be reduced by ¥2,000 on a weekday or ¥1,000 on a qualifying weekend or public holiday. These are simple examples; the official rules also set a maximum discount of ¥10,000.

You need at least two diners and a ¥5,500 pre-discount bill

The current official campaign page states that the coupon is available for parties of two or more. The same page also requires the total food and drink bill to be at least ¥5,500 including tax before the campaign discount is applied.

This means a solo diner should not expect to use the coupon, even if the order exceeds ¥5,500. For groups, the minimum-spend test is based on the bill before the campaign discount. If the eligible pre-discount total is below ¥5,500, the coupon cannot be used.

On-Yasai also requires customers using the all-you-can-eat service to order the same menu for the number of people dining. If you are traveling as a mixed group, confirm the course choice with everyone before ordering.

Which all-you-can-eat courses qualify?

The campaign page says the promotion covers On-Yasai’s all-you-can-eat courses, including limited-time courses, but it also lists specific exclusions. Travelers should not assume that every discounted reservation plan or every special lunch package qualifies.

The coupon cannot be used with the discounted all-you-can-eat-and-drink plan that becomes cheaper with a reservation made at least two days in advance. It also cannot be used with certain special-price lunch all-you-can-eat courses or certain 90-minute all-you-can-eat courses with a 70-minute last-order time offered at some locations.

If your reservation page shows a special package name, ask the restaurant whether that exact plan qualifies before relying on the campaign discount. This is especially important when booking through a reservation service that displays multiple restaurant-specific plans.

How to get and use the coupon

The coupon is published on the official On-Yasai campaign page. The page instructs customers to save a screenshot while the QR code is visible, then show that screen when ordering and again when paying.

There are separate coupon sections for the 20% non-holiday weekday dates and the 10% weekend/holiday dates, so save the one that matches your visit. Keeping the screenshot on your phone before arriving is practical because it avoids depending on mobile reception inside the restaurant.

The coupon cannot normally be combined with other coupons or preferential services. However, coupons specifically marked as combinable and On-Yasai’s age-based discounts can be used together with the campaign. The campaign coupon cannot be exchanged for cash, transferred or resold.

Children and customers aged 60 or over can receive additional age-based pricing

On-Yasai’s published campaign information says children below elementary-school age eat free under the applicable all-you-can-eat pricing, elementary-school children receive half-price pricing, and customers aged 60 or over receive a ¥500 discount including tax. The operator also states that the campaign discount is then applied to those age-adjusted prices.

This can make the promotion useful for multigenerational groups. However, the group still needs to satisfy the campaign’s overall conditions, including at least two diners, an eligible all-you-can-eat course and a pre-campaign-discount bill that meets the required threshold.

Important points for international visitors

The campaign page is primarily in Japanese, so international visitors should save the coupon before arriving and keep this article’s key conditions in mind. The QR coupon itself is the important item to show the restaurant staff.

The promotion is listed for Shabu-Shabu On-Yasai locations, and the company provides an official store finder covering locations across Japan. Store menus and operating hours can vary, so check the specific branch before making a special trip.

The coupon is not valid at the separate “On-Yasai Gohan Oishii Soup Shokudo” concept. The official rules also warn that extra charges may apply if customers leave food uneaten under the all-you-can-eat service. Order additional dishes gradually rather than ordering more than the group can finish.

Before you go: quick checklist

• Confirm whether your visit is a 20% date (September 14-18, 24-25, or 28-30) or a 10% date (September 19-23 or 26-27).
• Make sure your party has at least two diners.
• Choose an eligible all-you-can-eat course.
• Confirm that the pre-discount bill reaches at least ¥5,500 including tax.
• Save the QR coupon from the official campaign page before arriving.
• Show the coupon when ordering and again at checkout.
• If you booked a special plan, verify that it is not one of the excluded courses.
• Check your branch using the official store finder.

Official sources

• Shabu-Shabu On-Yasai: Respect for the Aged Day Campaign 2026
• REINS International official press release
• Shabu-Shabu On-Yasai official store finder

Summary

From September 14 to September 30, 2026, Shabu-Shabu On-Yasai is offering a limited-time discount on eligible all-you-can-eat dining in Japan. The 20% coupon applies on September 14-18, September 24-25, and September 28-30, while the 10% coupon applies on September 19-23 and September 26-27. The coupon requires at least two diners, an eligible all-you-can-eat course and a pre-discount food and drink bill of at least ¥5,500 including tax. Save the QR coupon from the official campaign page, show it when ordering and paying, and check any special reservation plan against the exclusions before you visit.